In our day to day life, relationships can change in a moment. Setting the relationships between parents and spouses is easily done in Ancestral Quest.
The first one to discuss in the parent/child relationship. Ancestral Quest allows you to set that to one of the following:
To do this, put the child in the main position in the Family View and click on the "Other Parents/Rels" button to the right of that child as shown below:
When you click the button, use the drop down arrow to expand the selections and choose the correct one for each parent:
Once the relationship has been set, click on OK and you are set for that child. If there are more children then repeat the steps till all the children's relationships involved have been labeled correctly.
That is how simple it is to set the correct relationships!